231513454220511 has 8 divisors (see below), whose sum is σ = 308698889393664. Its totient is φ = 154335160930520.

The previous prime is 231513454220459. The next prime is 231513454220513. The reversal of 231513454220511 is 115022454315132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231513454220511 - 2¹³ = 231513454212319 is a prime.

It is a super-2 number, since 2×231513454220511² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231513454220511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231513454220513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1785395151 + ... + 1785524816.

It is an arithmetic number, because the mean of its divisors is an integer number (38587361174208).

Almost surely, 2^{231513454220511} is an apocalyptic number.

231513454220511 is a deficient number, since it is larger than the sum of its proper divisors (77185435173153).

231513454220511 is a wasteful number, since it uses less digits than its factorization.

231513454220511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570941581.

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 231513454220511 in words is "two hundred thirty-one trillion, five hundred thirteen billion, four hundred fifty-four million, two hundred twenty thousand, five hundred eleven".